baber/WOPTO huggingface dataset:
Patent GB-152946-A (GB)
Title: Improvements in or relating to the production of table vinegar
IPC: C12J1/00
Filed: 1920-10-05
Abstract: 152,946. Holzverkohlungs Industrie Akt.-Ges. Oct. 23, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Vinegar.-A solid product obtained from a mixture of sodium acetate and acetic acid, for example by cooling a solution of dehydrated sodium acetate in glacial acetic acid, is dissolved in water for use as a table vinegar.
Patent GB-1450288-A (GB)
Title: Photopolymerizable compositon
IPC: G03F7/035
Filed: 1974-06-26
Abstract: 1450288 Photopolymerizable compositions UPJOHN CO 26 June 1974 [27 July 1973] 28275/74 Heading C3P [Also in Division G2] Photopolymerizable compositions suitable for forming relief images comprise (a) an addition polymerizable ethylenically unsaturated compound having a boiling point above 100‹ C., (b) a free radical initiator activatable by actinic radiation, and (c) a compatible polyurethane binding agent comprising the reaction product of (i) 4,4<SP>1</SP>-methylenebis-(phenylisocyanate), (ii) a polycaprolactone diol having a molecular weight of from 1000 to 2500 and (iii) a mixture of at least two different aliphatic diols having 2 to 6 carbon atoms, the ratio of equivalents of (ii) to total equivalents of (iii) being from 1:1À5 to 1 : 7, and the ratio of equivalents of (i) to total equivalents of (ii) and (iii) being from 0À94 : 1 to 0À98 : 1. In examples component (a) is trimethylolpropane trimethacrylate and component (b) is benzophenone.
Patent GB-903294-A (GB)
Title: Improvements in rubber hose
Inventor: SEAR DEREK WILLIAM
IPC: B29D23/00
Filed: 1957-09-07
Abstract: 903,294. Hoses. DUNLOP RUBBER CO. Ltd. July 14, 1958 [Sept. 7, 1957], No. 28294/57. Class 99(2). A hose comprises a lining of a polymer of a mono-olefine or a copolymer of mixed monoolefines integrally bonded to an outer layer of vulcanised rubber. The lining may be of a high density polyethylene and be bonded to the rubber layer by means of an organic peroxy compound or hydrogenated polybutadiene. In making the hose, a tubular lining is fitted over a mandrel or a strip of the lining material is wound on to the mandrel, and the outer layer is extruded. Textile or wire reinforcement may be incorporated in the hose. Specifications 865,806 and 903,295 are referred to.
Patent GB-223065-A (GB)
Title: Improvements in and relating to electric engravers
IPC: B23H9/06
Filed: 1923-11-09
Abstract: 223,065. British Thomson-Houston Co., Ltd., (General Electric Co.), Nov. 9, 1923. Electric and like pens and pencils.-In an electric engraving pen or pencil of the type comprising a marking-member of low resistance included in an electric circuit with the article to be engraved, the marking-member consists of a pointed rod 18 made wholly of a heat refractory material having a low specific resistance such as molybdenum or tungsten. A heat-protecting shield for the operator's hand may be provided, and the device may be air or water cooled. Fig. 1 shows the rod 18 fixed in a copper tube 14 provided with heat radiating discs 15, a copper conducting rod also fixed in the tube 4 being secured to a holder 11 by means of a ring 13 and ferrule 13<1>. The holder 11 and ring 13 are of insulating material; incidentally, the ring 13 forms a shield for the operator's hand. The copper rod is connected by a lead 20 to one low voltage terminal of a transformer 21, the other being connected to a plate 23 laid under the article 24 to be engraved. Fig. 3 shows a modification having copper inlet and outlet pipes 27, 28 for a cooling- liquid, these pipes being connected to the lead 20 and acting as conductors. The rod 18 is fixed in a cooling-chamber 25 secured to the holder 11.
Patent GB-1292769-A (GB)
Title: Vehicle wheel slip limiters
Inventor: BEYERLEIN DAVID GEORGE
IPC: B60T8/175
Filed: 1971-06-17
Abstract: 1292769 Controlling vehicle wheel slip electrically GENERAL MOTORS CORP 17 June 1971 [6 July 1970] 28387/71 Heading G1N [Also in Division H3] A wheel slip limiter for a motor vehicle comprises a tachogenerator 10 sensing speed of a non-driven wheel of the vehicle and a tachogenerator 12 sensing speed of a driven wheel, the respective signals being fed to squaring amplifiers 14,16 thence to a frequency comparator 18 producing an excessive wheel slip signal proportional to the amount by which driven wheel speed exceeds non-driven wheel speed which slip signal is applied to vary the duty cycle of a square wave produced by oscillator 20 and controlling the period of interruption of the vehicle engine ignition circuit 26 so as to vary engine torque thereby causing the driven wheel to slow to a normal slip to achieve maximum traction. A low speed disabling circuit 28 is arranged to prevent interruption of the ignition at a predetermined speed e.g. 2 m.p.h. of a non-driven wheel. There is also a circuit arrangement to ensure no interruption of the ignition circuit whilst the vehicle wheels are being braked. Circuit details are illustrated in Fig.2 (not shown), see Division H3.
Patent GB-695625-A (GB)
Title: Improvements in or relating to resinous materials
IPC: C08J9/06
Filed: 1949-11-05
Abstract: A resinous composition which is made into granules and moulded, e.g. to the shape of a shoe last having a cellular structure, comprises resinous material of a type that first softens and then cures to a hard condition on heating, and a blowing agent.  The resinous material may be (a) "Durez" (Registered Trade Mark) resin, which is understood to be a reaction product of cashew p  nutshell oil and another phenol together with about 8 per cent by weight of hexamethylenetetramine (see U.S.A. Specification 2,203,206); or (b) "Durez" or other phenolic resin plus a copolymer rubber which acts as a solid plasticizer and reacts with the "Durez", e.g. "Hycar" (Registered Trade Mark) which is understood to be butadiene-acrylonitrile plymer, or other butadiene-acrylonitrile copolymer rubbers; or (c) "Durez" plus "Hycar" plus a second rubber which does not react with the resin, e.g. natural rubber, polyisoprene, polyisobutylene or a butadienestyrene copolymer; or (d) a mixture of polyvinyl chloride and butadiene-acrylonitrile copolymer; or (e) resinous high-styrene-content copolymer of styrene and diolefine plus a polychloroprene synthetic rubber, e.g. "Neoprene"; or (f) the copolymer of (e) plus a rubbery low - styrene - content copolymer of styrene and butadiene.  Fillers may be used, e.g. lignin, clay, channel black or calcium carbonate or silicate. The blowing agent may be "Unicel" (diazoaminobenzene); ammonium or sodium bicarbonate (alone or with stearic acid); an agent understood to be biuret plus urea; a mixture of such materials; or a material such as hexamethylenetetramine that serves both as a blowing agent and as a curing agent.  Thus (example I), "Durez," butadiene acrylonitrile polymer, clay, coumarone-indene resin and "Unicel" are mixed hot, sheeted, cooled, comminuted, filled into a mould and heated.  In example II the composition comprises a copolymer of styrene and diolefins having a high styrene content, copolymers of butadiene and styrene, ZnO, stearic acid, S, coumarone-indene resin, sodium bicarbonate, Unicel and N-cyclohexyl-Z-benzothiazole sulphomide (a curing agent).  In example III, a blend of polyvinyl chloride and butadiene-acronitrile polymer, with Unicel, is used.  In example IV, inter alia, calcium silicate and benzothiazyl disulphide (vulcanization accelerator) are used. Other examples include pale crepe rubber and diazoaminobenzene.
Patent GB-1089552-A (GB)
Title: Hoeing tool
IPC: A01B39/20
Filed: 1964-07-09
Abstract: 1,089,552. Agricultural implements. A. M. WORBEY. July 8, 1965 [July 9, 1964], No. 28392/64. Heading A1B. A hoeing tool for hoeing around growing plants comprises hoe blades 7, 8 mounted on vertical shafts 4, 5 carried by tubes 2, 3, the blades being oscillated by handles 12, 13 by an operator sitting on the towbar or on a seat on the vehicle to which the tool is attached, foot rests 17, 18 being provided for the operator.
Patent GB-426546-A (GB)
Title: Improvements in and relating to striplike blades for safety razors
IPC: B26B21/26
Filed: 1933-10-02
Abstract: 426,546. Safety razors. ERN, R., 591, Vlierboomstraat, The Hague, and NIEPENBERG, K. F., 19, Kotterstrasse, Solingen, Germany. Oct. 2, 1933, No. 28489/34. Divided out of and addition to 426,399, under which a Specification was laid open to inspection under Sect. 91 of the Acts, April 5, 1934. [Class 30] A ribbon blade of the kind described in the parent Specification is formed with semicircular openings 19 in the cutting edges. Specification 426,604 is referred to.
Patent GB-1347881-A (GB)
Title: Optical method of and apparatus for radio frequency spectrum analysis
IPC: G02F1/11
Filed: 1971-06-17
Abstract: 1347881 Produlating light HEWLETT PACKARD CO 17 June 1971 [17 June 1970] 28497/71 Heading H4F [Also in Division G2] In a method of separating the different frequency components of a radio frequency signal, an acoustic wave S 2  is excited in an optically anisotropic medium 3, e.g. a birefringent crystal such as LiNbO 3 , PbMoO 4 ; CaMoO 4 , at the radio frequency to be analysed, a linear polarized beam 71 originating from a broad band light source 6 is colinearly diffracted or the acoustic wave within the medium 3 from a first polarization plane and of a frequency related to that of the acoustic wave to a second polarization plane, the output light beam 7<SP>11</SP> being analysed at 9 to separate the light in the second polarization plane from the light in the first polarization plane, and then analysing the spectrum of the light 11 in the second polarization plane to obtain an output 15 corresponding to a frequency separation of the radio frequency signal. The spectrum analysis may be made using a prism 12 of a diffraction grating. To obtain a desirable output spectrum 15 light from prism 12 passes a wedge attenuator 14 having a gradient of attenuation normal to the direction of spatial separation of the frequency components within beam 11. The output is in the form of amplitude peaks. In an alternative embodiment, Fig. 6, the broad band light beam 7 (e.g. of white light) is vertically polarized to produce beam 7<SP>1</SP> and the diffracted output beam 7<SP>11</SP> passed to a Rochon prism 31 where both the first, vertically polarized, 27, and second, horizontally polarized, 11, components are separated and a spectrum analysis made on both components. In another embodiment the diffracted output beam from crystal 3 is passed to a polarizing analyser having the same polarization as that of polarizer 8 so that only light in the first polarization plane is passed for analysis. In a further embodiment a single Rochon prism is used as both polarizer and analyser light from source 6 passing through the prism, where it is polarized in a first plane, and through the crystal 3 where it is diffracted by the acoustic wave. The beam is reflected back through crystal 3 to the Rochon prism where only light in the second polarization plane is used to give the spectrum display. Where crystal 3 is lithium niobate the band of light frequencies diffracted from the first polarization plane into the second polarization plane are tunable from 7000  to 5500  by changing the acoustic frequency from 750 MHz to 1050 MHz. For a crystal 5 cm. long the instantaneous band pass is less than 2 .
Patent GB-897588-A (GB)
Title: Improvements in or relating to an arrangement for selective voltage output measurement
IPC: H04B3/48
Filed: 1959-08-20
Abstract: 897,588. Testing apparatus. SIEMENS & HALSKE A.G. Aug. 20, 1959 [Aug. 22, 1958], No. 28513/59. Class 37. Testing apparatus comprises a first generator 1, Fig. 1, the frequency of which may be locked to a harmonic of a crystal oscillator 2, a second generator 9 the frequency of which is adjustable by a tunable oscillator 14 over a band, the width of which is equal to the frequency spacing of two adjacent harmonics of oscillator 2, and a measuring receiver, Fig. 2, including a first conversion stage 25 the auxiliary frequency of which is equal to the frequency of generator 1, and a second conversion stage 35 the auxiliary frequency of which is equal to, or derived from that of oscillator 14. Crystal oscillator 12, which determines the basic frequency of generator 9 may be replaced by a filter which selects one harmonic from oscillator 2. Separate generators 26, 36 are preferably not used, but generators 1, 9 supply the auxiliary frequencies for conversion stages 25, 35. The output of stage 35 may be still further reduced in frequency in stage 45 before being supplied to an evaluation device 50 through a wide band pass filter 47 or a narrow band pass filter 46. When a continuously variable test frequency is required, frequency determining element 5, e.g. a reactance valve is replaced for example by a rotary capacitor, and generator 26 is similarly modulated. The output of the measuring receiver is in this case, applied to a cathode-ray tube which also receives a deflection voltage proportional to the instantaneous test frequency. Auxiliary frequency fq supplied to stage 46 may be automatically adjusted Fig. 4 (not shown), to maintain the output of stage 45 at the centre-pass frequency of the selected filter 46 or 47.
Patent GB-377029-A (GB)
Title: Improvements relating to gear wheel grinding machines
IPC: B23F5/02
Filed: 1931-10-14
Abstract: 377,029. Gear-grinding. GEAR GRINDING CO., Ltd. and BULLOWS, R. J., Anne Road, Handsworth, Birming- ham. Oct. 14, 1931, No. 28526. [Class 83 (iii).] A machine for grinding toothed gears-particularly helical gears-of the kind in which the gear blank w is rolled relatively to the grinding wheel x to generate the tooth profiles, comprises a supplementary frame a, pivoted on a trunnion b to the main frame c and fitted with a slide e having bearings for the work spindle i carrying the work arbor j, the slide being reciprocated to roll the blank past the cutter and the indexing of the blank being performed by separate fluid-operated motors mounted in the supplementary frame. The latter may be pivotally adjusted round the trunnion b by a rod d. The slide e is guided at its lower edge by a guide f and at its upper part by a guide strip g. The rolling and indexing mechanism comprising toothed wheels k engaging a stepped rack l may operate as described in Specification 376,911, a constant torque being exerted on the work spindle by a multi-cylinder motor n acting through gears o. The slide e is reciprocated by a fluid-pressure cylinder p controlled by a valve s which is operated by dogs on the slide. Part of the fluid flows through a reducing valve t to the indexing motor.
Patent GB-730220-A (GB)
Title: Improvements in hand trucks
IPC: B65G1/07
Filed: 1952-11-13
Abstract: 730,220. Balanced platforms. HOUGH, T. Nov. 12, 1953 [Nov. 13, 1952], No. 28593/52. Class 78 (2). [Also in Group XXXII] A hand truck (see Group XXXII) has a base A<SP>1</SP> suspended on tension springs or cords B whereby as the load contents are removed the base is raised up guide rods a<SP>4</SP> by the springs. Specification 530,590 is referred to.
Patent GB-784365-A (GB)
Title: Improvements relating to umbrella frames
IPC: A45B25/08
Filed: 1955-10-07
Abstract: 784,365. Umbrellas. EICKHORN, K. H. and BREMSHEY, F., [trading as BREMSHEY & CO.]. Oct. 7, 1955 [Nov. 2, 1954], No. 28658/55. Class 134 In an umbrella in which a displaceable ring 10 mounted on the slide 4 serves to disengage the upper and lower locking springs from a slot in the slide, the ring 10 is provided with a flared extension 11 to prevent the fingers of a user from slipping beyond the ring into contact with a notched rim 5, on the slide 4, to which the stretchers are pivoted. The flared extension 11 is bent inwardly at its end 12 to provide an additional guide for the ring 10 on the slide 4 and abuts against the rim 5 when the ring 10 is in the position which allows the upper locking spring 8 mounted in the stick 1 to enter the rest in the slide 4. Movement of the ring in the other direction is limited by a flange 9 on the slide 4. The umbrella may have telescopic stick and rib sections.
Patent GB-1474283-A (GB)
Title: Method of treating the spent acid obtained in the nitration of polyhydric alcohols
IPC: C06B21/00
Filed: 1974-06-27
Abstract: 1474283 Treating spent nitration acid J MEISSNER 27 June 1974 [29 June 1973] 28659/74 Heading C1A [Also in Division C2] The spent acid obtained in the nitration of a polyhydric alcohol is stabilized by mixing it with at least an equal amount of an acid free of nitration product but. containing one or more aromatic nitro compounds and obtained in the subsequent extraction step; and the mixture is then freed from the nitration product by extraction with an aromatic nitro compound which is a liquid at room temperature or at up to 70 C. Extracted acid is recycled as indicated.; or part may be used for the nitration of an aromatic compound, e.g. an aromatic nitro compound, to produce the aromatic nitro compound extractant. In an example spent acid from the nitration of glycerol to nitroglycerine is treated, and the process is combined with the nitration of toluene to dinitrotoluene to serve as extractant. Other alcohol nitration processes in which the spent acid is treated as above are those producing nitroglycol and 3-chloro-1,2 propanediol, diethyleneglycol and triethyleneglycol dinitrates.
Patent GB-1152655-A (GB)
Title: Electro Photography
IPC: C08F26/00
Filed: 1966-06-27
Abstract: 1,152,655. Phthalocyanine-containing polymers. RANK XEROX Ltd. 27 June, 1966 [1 July, 1965], No. 28665/66. Headings C3B, C3P and C3R. [Also in Divisions C4 and H1] The Specification discloses polymers for use in electrophotographic elements in which at least 2 wt. per cent of the recurring molecular units comprise a phthalocyanine residue. An epoxy resin is formed by mixing tetraaminophthalocyanine with epichlorohydrin/bisphenol A epoxy resin and curing. Alternatively diamino phthalocyanine may be used to cure and cross-link epoxy resins. An addition polymer is made by polymerizing vinyl phthalocyanine and acrylonitrile; or vinyl phthalocyanine, vinyl chloride and vinyl acetate, preferably in situ, by the use of a glow discharge or condensing a terpolymer of vinyl acetate, vinyl alcohol and vinyl chloride with an excess of copper phthalocyanine monosulphonic acid chloride to give pendant Cu phthalocyanine attached to vinyl alcohol units through an ester link. Homopolymers of mono, di, tri and tetra-vinyl phthalocyanine are mentioned, together with a list of ethylenically unsaturated monomers for the formation of copolymers. Condensation polymers of various types are formed by the following reactions: (a) suberic acid with polyaminophthalocyanine, (b) phthalocyanine dicarboxylic acid and suberic acid with glycerol and methanol, (c) dimethylol phthalocyanine with 1,6-hexamethylene diisocyanate, (d) dihydroxy germanium phthalocyanine with 1,4-butanediol, (e) glow discharge polymerization of phthalocyanine tetracarboxylic acid to give a cross-linked polymer by condensation. A block copolymer may be formed condensing 3,4,3<SP>1</SP>,4<SP>1</SP>-tetracyanodiphenyl to give a short chain phthalocyanine polymer, oxidizing the terminal CN groups to give a di-isocyanate and condensing with 1,4-butanediol to give a polyurethane.
Patent GB-763313-A (GB)
Title: Improvements in or relating to gas-fired water heaters
Inventor: SMITH CHARLES DONALD
IPC: F24H1/10
Filed: 1954-10-06
Abstract: 763,313. Water heaters. FLAVEL & CO., Ltd., S. Oct. 5, 1955 [Oct. 6, 1954], No. 28751/54. Class 64(1) In a gas-fired water heater in which the water flows downwardly in a thin film over the outer surface of a sheet-metal frusto-conical or similarly shaped shell a closed at its upper end and having holes c through which the hot gases from a burner flow into an annular space surrounded by an outer cylinder, the holes have outwardly directed collars e with radially projecting flanges f at their ends. The collars are longer than the greatest thickness of the water film. This prevents water entering the holes. The collar and flange, or collar only, may be integral with the shell a, or the flange and collar may be integral with one another or made in two separate pieces. Triangular bosses d deflect the water to the sides of the holes.
Patent GB-706272-A (GB)
Title: Improvements in or relating to internal combustion engines with light metal cylinders
IPC: F02F1/08
Filed: 1951-12-07
Abstract: 706,272. Cylinders; crank casings; driving gear; ignition. KLAUE, H. Dec. 7, 1951 [Dec. 11, 1950], No. 28763/51. Classes 7(2) and 7(4) An internal combustion engine, for example a two-stroke cycle engine, comprises a cylinder 1 of light metal (i.e. aluminium or aluminium alloy) having a chromed inner surface 2 and a crank casing 10 of light metal the crank casing forming a bearing for cylindrical crank cheeks 7, 8 also of light metal. The crank case may be chromed on the inside or the crank cheeks instead of the crank case may be chromed if desired. The crank cheeks are connected together by a steel bush 6 which forms the crank pin. Rollers 5 are provided around the bush. Cylindrical steel balance weights 11, 12 are provided. Improved control of the intake of fresh gas into'the crank case may be obtained by means of bores formed in the crank cheeks. The magneto unit is indicated at 13.
Patent GB-653170-A (GB)
Title: An audible alarm device for kinematograph apparatus
IPC: G03B21/32
Filed: 1948-11-05
Abstract: 653,170. Kinematograph apparatus. JACKSON, J. G., and TRUMPOUR, J. N. Nov. 5, 1948, No. 28865. Convention date, Nov. 24, 1947. [Class 97 (i)] An audible signal unit comprises a carrier secured to a spool spindle and a pendulum pivotally mounted on the carrier eccentrically to the spindle, so that when the frequency of rotation of the carrier equals the pendulum frequency the pendulum swings to operate a signal device on the carrier. In the form shown a member 15 is secured to the spool spindle 11 by a setscrew 16 and carries an eccentric stub spindle 21 having a bell 30 at its outer end and being surrounded by a sleeve 22 to which is attached a block 23. An arm 33 carrying a striker 32 for the bell is pivoted to the block 23. The pendulum comprises a rod 20 fixed to the block 23, having a lower weight 26 and an upper weight 27, adjustable to vary the pendulum frequency. An adjustable weight counterbalances the weight of the bell and pendulum to balance the member 15 about the spool spindle.
Patent GB-630055-A (GB)
Title: Improvements in or relating to mine cars, pit tubs and the like
IPC: B61F5/32
Filed: 1947-10-30
Abstract: 630,055. Mine car axle mountings. ODDIE, J. M. Oct. 30, 1947, No. 28945. [Class 103 (vi)] In a mine car or the like, the wheels are carried upon stub axles 2 secured in levers 3 arranged longitudinally with each of the car side frames 4 and pivoted thereto at 5. The inner ends 7 of the levers 3 compress leaf springs 8 centrally secured to the frames 4 and the outer ends are limited to move within the straps 10. The pivots 5 may be stub shafts or rods 6 transversely connecting the frames 4 at each side and acting as door hinges if the car is of the bottom emptying type. Coil springs may be provided in combination with the brackets 10 and the springs 8 may take any other suitable form.
Patent GB-804337-A (GB)
Title: Improvements relating to creels
IPC: D01H1/18
Filed: 1956-09-21
Abstract: 804,337. Creels. LUWA A .G. Sept.21, 1956 [Feb. 2, 1956], No. 28978/56. Class 120(2) The accumulation of lint and fly in a creel is prevented by a creel including a hollow elongated member 10 of substantially triangular section having an opening 14a in the base of the triangle and a rib 15 adapted at its end 15a to engage a slot 16a in the head of a screw 16 slidably arranged in the member 10 to engage a bobbin holder. Preferably the member 10 is connected to the creel frame by clamps 20 and prevented from longitudinal motion by screws 21. Since the rib 15 engaging the slots 16a in the screws 16 prevents rotation of the screws, bobbin holders may be screwed on to screws 16 already in position in the member 10.